\documentclass[landscape]{article}
\setlength{\pdfpagewidth}{11in} \setlength{\pdfpageheight}{8.5in}
\begin{document}
\begin{tabular}{lcccccccccccccc}
\multicolumn{15}{c}{Effect} \\
\multicolumn{15}{c}{)} \\ \hline
 & (1) & (2) & (3) & (4) & (5) & (6) & (7) & (8) & (9) & (10) & (11) & (12) & (13) & (14) \\
VARIABLES & changepop1400 & changepop13001600 & changepop1400\_int & changepop13001600\_int & changepop1400\_tot & changepop13001600\_tot & changepop1400 & changepop1400 & changepop13001600 & changepop13001600 & city\_yn\_1400 & city\_yn\_1600 & lpop1400\_05 & lpop1600\_05 \\ \hline
 &  &  &  &  &  &  &  &  &  &  &  &  &  &  \\
mortality & -0.87*** & 0.36 &  &  &  &  & -0.72** & -0.68** & -0.08 & 0.16 & -0.002*** & -0.001 & -0.004*** & 0.002 \\
 & [0.28] & [0.80] &  &  &  &  & [0.31] & [0.33] & [0.82] & [0.84] & [0.001] & [0.001] & [0.001] & [0.002] \\
 &  &  &  &  &  &  &  &  &  &  &  &  &  &  \\
mortality274 &  &  & -1.15*** & -1.49 & -1.48** & -1.36 &  &  &  &  &  &  &  &  \\
 &  &  & [0.40] & [1.32] & [0.57] & [3.17] &  &  &  &  &  &  &  &  \\
nonlocal &  &  &  &  &  &  & -0.39 & -0.57 & 1.49 & 0.60 &  &  &  &  \\
 &  &  &  &  &  &  & [0.43] & [0.47] & [1.50] & [1.78] &  &  &  &  \\
 &  &  &  &  &  &  &  &  &  &  &  &  &  &  \\
Observations & 165 & 164 & 68 & 68 & 68 & 68 & 160 & 165 & 159 & 164 & 1,335 & 1,335 & 1,335 & 1,335 \\
R-squared & 0.12 & 0.00 & 0.16 & 0.01 & 0.12 & 0.00 & 0.12 & 0.14 & 0.02 & 0.00 & 0.010 & 0.000 & 0.011 & 0.001 \\
unit & baseline & baseline & state & state & state & state &  &  &  &  & city & city & city & city \\
pop & intensive & intensive & intensive & intensive & total & total &  &  &  &  & dummy if exists & dummy if exists & log pop & log pop \\
 test &  &  &  &  &  &  & state & distance10pctil & state & distance10pctil &  &  &  &  \\ \hline
\multicolumn{15}{c}{ Robust standard errors clustered at the district level in parentheses} \\
\multicolumn{15}{c}{ * significant at 10\%; ** significant at 5\%; *** significant at 1\%} \\
\end{tabular}
\end{document}
